One-column abstract in two-column layouts in articles on Latex

If you want one-column abstract in two-column layouts in articles on Latex, just add abstract package and follow below source code. Someone who uses ubuntu linux can install the abstract package from ‘texlive-latex-extra’ package via synaptic. Others can install from http://www.tex.ac.uk/tex-archive/macros/latex/contrib/abstract/

usepackage{abstract}

twocolumn[
  maketitle
  begin{onecolabstract}
    Here in which one-column abstract resides
  end{onecolabstract}
]

You should move ‘maketitle’ within ‘twocolumn’ like above code and remove ‘abstract’.

You can find further information about the abstract package from http://www.tex.ac.uk/tex-archive/macros/latex/contrib/abstract/abstract.pdf.